Double perovskite oxides are of interest because of their physical properties; however, these properties are strongly dependent on the ordered arrangement of cations in the double perovskite structure. We show that the slow growth rates close to thermodynamic equilibrium conditions in chemical solution methods are advantageous promoting spontaneous B-site cationic ordering.

Spontaneous cationic ordering in chemical solution-grown La2CoMnO6 double perovskite thin films
Hailin Wang, Jaume Gazquez, Carlos Frontera, Matthew F. Chisholm, Alberto Pomar, Benjamin Martinez, Narcis Mestres
NPG Asia Materials 11:44, 2019
DOI: 10.1038/s41427-019-0144-8

Figure: From left to right, Z-contrast image of the LCMO film, ADF image, atomic maps of La M, Co L, and Mn L absorption edges and RGB map produced by overlaying the Co (in red) and Mn (in green) elemental maps. The spectrum image was acquired along the [110]-zone axis for visualizing the B-site ordering.

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